Fishing tool



" Maifch 4, 1930. Y A. o. HAMBLEN I FISHING TOOL Filed Jun 6, 1928 I .nr 37 s H 'P atented Mar. 4, 1930 UNITED STATES;

PATENT OFFICE i rrsrtme 'roor.

Applieation filed. June 6, 1928. Serial No. 283,222.

My invention relates to a fishing tool for use in the recovering of lostpump and drill rods or pipes in the so-called driven wells.

The main object is to provide a tool which may be lowered over the rodto be pulled whereby it willgrip the said rod so that the same may bedrawn from 'the well.

Another object is to provide such a device with a plurality of grippingmembers which will automatically swing togetherand grip the rod to bewithdrawn substantially entirely around its circumference, thusproviding a better grip upon the rod and allowing long sections of rodto be removed from the well.

' A further object is to provide such a tool which is easily removedfrom the rod when the same is withdrawn and which will be simple andstrong in construction and ellicient in operation.

' With theseand other objects in view the invention resides in the novelconstruction and arrangement of the parts as'hereinafter set forth andclaimed.

-In the drawing:

Figure 1 is a side elevation of my tool. Figure 2 is a vertical sectionof my tool,

two of the hinged jaw elements being shown partially swung outward andthe retaining band removed.

Figure'3 is a plan view of my tool; and Figure 4 is a detail view inperspective of one of the gripping elements or teeth.

In practicmg my invention I rovide a main body portion 1, formed 0suitable metal, which is provided with a reduced extension 2 and amedial bore 3, the said extension 2 having threads 4 to receive theinternally threaded end of a pipe (not shown) used in lowering the toolinto a well (not shown). I

Four jaws 5 are hinged to the lower margin 6 of the body 1 byconventional hinges 7 and these jaws arearcuate in cross section.

and'wedge shaped on a longitudinal section thru the axis of theassembly, as shown, so that the inner faces 8 thereof will form aconical or hell shaped mouth 9 for the reception of the rod to bepulled. The walls of the mouth converge upwardly as shown and so tend toguide the tool in lowering it over the upper end of the said rod bemgpulled. The jaws 5 are releasably held in the closed position by acircular retaining band 10 adapted to slidingly fit downwardly thereoverandv seat against the outer arcuate shoulders 11. .A band 12 is fixedupon the extended portion'2 of the body 1- and a chain 13 has its endssecured in apertured tabs or ears 14 formed upon the bands 10 and 12thus preventing the entire removal of the band 10 from the tool so thatit might become lost, yet allowing it to be readily removed fromengagement with the jaws 5 as will be understood. Gripping teeth orblades 15 are rigidly secured at their lower ends in any suitablemanner, as by screws 16, to the inner faces 8 of the jaws 5 adjacent thelower margins thereof. The gripping teeth 15 are formed of heavy springmaterial and are adapted to converge inwardly. and upwardly towardstheir gripping ends 17 as shown, thesaid teeth being concavo-convex incross section to conform closely to the contour of the rod which theyengage. The upper ends 17 are beveled or sharpened somewhat to aidinobtaining a firm grip upon the rodv being removed and as shown in Figure3 the same will be engaged or gripped at four diametrically oppositepoints which also facilitates the removal of the said rod.

In the use and operation of the device the tool is screwed on the end ofa suitable pipe and with the hinged jaws 5 closed, is low-'85 ered intothe well. The flaring mouth 9 will slip downwardly over the end of therod to be pulled and the gripping teeth 15 due to their being made ofspring material will spring outward allowing the said rod to pass 9 theteeth. Then by pulling upward upon the tool by the attached pipe (notshown) the gripping teeth will grip the rod sothat'it may be pulled fromthe well as will be understood. When the rod is withdrawn from 9 thewell the tool ,is removed therefrom by sliding the band 10 upward sothat the jaws 5 may be swung outward releasing the rod. 1 It is obviousthat any number of hinged jaws may be used as desired.

Thus it will be seen that I provide a simple and easily operated toolwhich is very efficient in fulfilling its function.

While I have herein set forth a preferred embodiment of my invention, itis understood that'I may vary the structural details thereof, within thescope of the appended claims.

I claim:

1. In a tool ofthe class described, a circular body portion having athreaded extension for the reception of an operating pipe, and apassageway for a drill rod, a plurality of jawsgin of the body, the

hinged to the lower mar said jaws being arcuate 1n cross-section andWedge shaped longitudinally the narrow end being turned downwardly, aband adapted to slidinglyfit over the jaws in the closed position andspring set gripping teeth or blades. secured to the inner faces of thejaws and converging inwardly and upwardly. Y

'2. In a tool of the character described, a body portion having alongitudinal'passageway for a drill rod, a band or collar fixed thereon,a plurality of jaw elements hinged-to the body, the said jaw elementsbeing arcuate in cross section and wedge shaped with the narrow endsdisposed downwardly, a retaining band adapted to slidably fit over thejaw elements, a connecting element connecting the said retaining bandand the said fixed bandor collar, and spring set means upon the'jawele-- ments to grip a drill pipe or the like for pull.- ing the same, Y

3. In a tool of the character described,

body portion having a longitudinalpassageway for a drill rod, aplurality of jaws hingedly connected to the and inwardly and a plurality0 spring set pipe gripping teeth or blades .upon the aws, the said teethalso converging upwardly and inwardly and being ooncavo-convex 1n crosssection.

In testimony whereof I aflix my signature.

ALVA OTIS HAMBLEN.

to hold the same body portion, the inner ,faces of the said jawsconvergintg upwardly

